<template>
  <!-- 添加或修改菜单对话框 -->
  <el-dialog :title="!form.id ? '新增' : '修改'" :visible.sync="visible">
    <el-form ref="dataForm" :model="form" :rules="rules" label-width="80px">
      <el-row>
        <el-col :span="12">
          <el-form-item label="菜单类型" prop="type">
            <el-radio-group v-model="form.type" size="small">
              <el-radio-button label="0">左菜单</el-radio-button>
              <el-radio-button label="1">按钮</el-radio-button>
              <el-radio-button label="2">顶菜单</el-radio-button>
            </el-radio-group>
          </el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item label="上级菜单"><treeselect v-model="form.parentId" :options="menuOptions" :normalizer="normalizer" :show-count="true" placeholder="选择上级菜单" /></el-form-item>
        </el-col>
      </el-row>
      <el-form-item label="图标" prop="icon" v-if="form.type !== '1'"><avue-input-icon v-model="form.icon" :icon-list="iconList"></avue-input-icon></el-form-item>
      <el-form-item label="名称" prop="name"><el-input v-model="form.name" placeholder="请输入菜单名称" /></el-form-item>
      <el-form-item label="路由地址" prop="path" v-if="form.type !== '1'"><el-input v-model="form.path" placeholder="请输入路由地址" /></el-form-item>
      <el-form-item label="权限标识" prop="permission" v-if="form.type === '1'"><el-input v-model="form.permission" placeholder="请权限标识" maxlength="50" /></el-form-item>
      <el-row>
        <el-col :span="12">
          <el-form-item label="排序" prop="sort"><el-input-number v-model="form.sort" controls-position="right" :min="0" /></el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item label="路由缓冲" prop="keepAlive" v-if="form.type !== '1'">
            <el-radio-group v-model="form.keepAlive">
              <el-radio-button label="0">否</el-radio-button>
              <el-radio-button label="1">是</el-radio-button>
            </el-radio-group>
          </el-form-item>
        </el-col>
      </el-row>
    </el-form>
    <div slot="footer" class="dialog-footer">
      <el-button type="primary" @click="dataFormSubmit">确 定</el-button>
      <el-button @click="visible = false">取 消</el-button>
    </div>
  </el-dialog>
</template>

<script>
import {fetchMenuTree, getObj, addObj, putObj} from "@/api/admin/menu";
import Treeselect from "@riophae/vue-treeselect";
import iconList from "@/const/iconList";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";

export default {
  name: "Menu",
  components: {Treeselect},
  data() {
    return {
      // 遮罩层
      loading: true,
      // 菜单树选项
      menuOptions: [],
      // 是否显示弹出层
      visible: false,
      // 图标
      iconList: iconList,
      form: {
        id: undefined,
        name: undefined,
        path: undefined,
        icon: undefined,
        permission: undefined,
        type: "0",
        keepAlive: "0",
        sort: 1
      },
      // 表单校验
      rules: {
        name: [{required: true, message: "菜单名称不能为空", trigger: "blur"}],
        sort: [{required: true, message: "菜单顺序不能为空", trigger: "blur"}],
        path: [{required: true, message: "路由地址不能为空", trigger: "blur"}],
        keepAlive: [{required: true, message: "路由缓冲不能为空", trigger: "blur"}],
        permission: [{required: true, message: "权限标识不能为空", trigger: "blur"}]
      }
    };
  },
  methods: {
    init(isEdit, id) {
      if (id != null) {
        this.form.parentId = id;
      }
      this.visible = true;
      this.getTreeselect();
      this.$nextTick(() => {
        this.$refs["dataForm"].resetFields();
        if (isEdit) {
          getObj(id).then(response => {
            this.form = response.data.data;
          });
        } else {
          this.form.id = undefined;
        }
      });
    },
    // 表单提交
    dataFormSubmit() {
      this.$refs["dataForm"].validate(valid => {
        if (valid) {
          if (this.form.parentId === undefined) {
            this.form.parentId = -1;
          }

          if (this.form.id) {
            putObj(this.form).then(data => {
              this.$message.success("修改成功");
              this.visible = false;
              this.$emit("refreshDataList");
            });
          } else {
            addObj(this.form).then(data => {
              this.$message.success("添加成功");
              this.visible = false;
              this.$emit("refreshDataList");
            });
          }
        }
      });
    },
    /** 查询菜单下拉树结构 */
    getTreeselect() {
      fetchMenuTree().then(response => {
        this.menuOptions = [];
        const menu = {id: -1, name: "根菜单", children: []};
        menu.children = response.data.data;
        this.menuOptions.push(menu);
      });
    },
    /** 转换菜单数据结构 */
    normalizer(node) {
      if (node.children && !node.children.length) {
        delete node.children;
      }
      return {
        id: node.id,
        label: node.name,
        children: node.children
      };
    }
  }
};
</script>
